Machine for making lath-boards.



S. M. FORD.

MACHINE FOR MAKING LATH BOARDS.

APPLICATION FILED APR.13| l9l8.

Patented Dec. 10, 1918.

2 SHEETS-SHEET l.

S. M. FORD.

MACHINE FOR MAKING LATH BOARDS.

APPLICATION FILED APR. 13, 1918.

1,287,275. I Patented Dec. 10, 1918.

lzwfihr."

61:24.5 JIZTF E,

SILAS M. FORD, OF ST. PAUL, MINNESOTA.

MACHINE FOR MAKING LATE-BOARDS.

Specification of Letters Patent.

Patented Dec. 10, 1918.

Application filed April 13, 1918, Serial No. 228,357.

To all whom it may concern Be it known that I, SILAS M. Form, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Machines for Making Lath-Boards, of which the following is a specification.

One object of my invention is to provide improved means for forming material from a rectangular or dovetailed shape into a closer dovetailed shape.

Another object of my invention is to provide in a athering chain, means for extending an withdrawing the gathering slats at redetermined points.

other object of my invention is to provide in a gathering chain an anti-friction form for holding dovetailed shaped formations. With these and incidental objects in view, the invention consists of certain novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings Figure 1 is a side elevation of a machine embodying my invention; Fig. 2 is a section taken on the line 22, Fig. 1; Fig. 3 is an enlarged detail of my preferred form of gathering slat and'holding form; and Fig. 4 is an enlarged view of clams controlling the radial motion of the s ats.

The machine illustrated in the drawings embodying my invention is somewhat similar to that disclosed in my Patent #1251879 issued January 1. 1918, and the general description of the machine will not be enlarged on in this application but only the improvemen s which are claimed herein.

e paper. or other suitable material 1, Fig. 1. is formed bv any suitable means into a somewhat dovetailed shape as at 3 in which shape it is acted upon by a pair of gathering chains 4 and 5 in the same manner as described in my patent aforesaid.

As described in the aforesaid patent the gathering chain is utilized to decrease the dovetailed shape and serves mainly as a guide for holding the material in this shape while certain other processes are carried out.

The slats 6, Fig. 3, are mounted on the chains 4 and 5 and an extension 7 is mounted on the slat 6 by slidable connections at 8.

The slats 7 carry angle bars 9 adapted to position the corrugated paper as at 10, Fig. 3, thereby holding it in its shape, and as these angle plates move with the paper during its travel with the chain, there can be no friction between the paper and the angle plates, as is experienced Where permanently positioned guides are provided for carrying the formed paper therethi'ough.

With the corrugation positioned between the slidable extensions 7 and the angle plates 9, as plainly shown in Fig. 3 it is evident that the formed material may be carried from the line at 11, Fig. 1, to the line at 12 without any possibility of the formations becoming distorted.

The machine may deliver at 12 the material as formed, from which place it may be taken up by other forming means or the formations may be wired between the lines 11 and 12 by passing flat strips though the slots 13, ig. 2, to permanently hold the formations of the paper and also to stifi'en the completed lath-board.

Looking at Fig. 1, it will be seen that the angle plate just approaching the paper and designated by the numeral 9' swings downwardly and assumes its proper position with the material without any difiiculty.

It is, however, apparent that when the slats swing out on the line 12 the angle plates would swing into the formed material, and for that reason the cam slots 14 and 15 are provided to lift the slidable extension 7 with their angle plates from the material, so they may be swung therefrom without injuring the product.

Looking at the enlarged view of the cam shown in Fig. 4, it will be seen that the camming surfaces at 15 are so formed as to have lifted the slidable slats the total amount of distance, line 12 has been reached. also the ends 16 of the slidable slats 7, Fig. 2, follow the grooves 15, 17, 18, 19 and through the entire cycle, the radius of the groove 17 being smaller than that of the groove 19, so the groove 18 is tangent to the groove 17 at 21, and to the groove 19 at 22, likewise the groove 20 is tangent to the groove 19 at 23 and meets the camming surface 15 at 24 and is led to the groove 17 at 25 on the center line 12.

aims:

1. In a machine for making lath boards from strip material having rectangular or by the time the center dovetailed formations therein, a gathering chain having slats carried thereon and angular pieces carried by said slats and adapted to hold in place the said formations of formed material passed therethrough.

2. In a machine for making lath boards the combination of a gathering chain, fixed slats carried thereon, slidable slats mounted on said fixed slats and formation holding means carried by said slidable slats.

3. A gathering chain comprising in combination a pair of sprocket wheels, a sprocket chain carried by said sprocket wheels, slidably mounted slats carried by said sprocket chains, and formation holding means carried by said slidable slats.

4. In gathering means for making lath boards, the combination of a pair of sprocket wheels, a chain carried by said s rocket wheels, slidable slats carried by sai chain, formation holding means carried by said slats, and a cam controlling the motion of said slidable slats for withdrawing said slats from an extended position while traveling between said sprocket wheels to a retracted position, said cam being of such contour that said motion is effected just prior to, and completed at the line of the axis of rotation of the second of said sprocketv wheels.

SILAS M. FORD. 

